I fixed that after following instruction with askubuntu.com/questions/36930/…. I got both Intel & Nvidia Graphic Card working. Problem now is chrome still couldn't run webGL, but firefox can.
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TonyMochaMar 5 '12 at 10:27

Thank you. WebGL used to work for me if I used optirun google-chrome to launch it. Then after an update it stopped working and I noticed HTML <video> was jerky. I tried a few times to fix it and almost contemplated switching to Firefox. Your answer saved the day.
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Andy EFeb 21 '13 at 14:13